Can't access GS7E SD card on my PC

[TimLaL]

I recently got a Galaxy S7 Edge and inserted an SD card that was in my Blackbery Z30.
The card has photos and music which I can access via the phone, and I can also store to it.
However, when I connect the phone to my PC via a USB cable, it neither the phone nor the SD card are visible in Windows Explorer (Windows 10).
What am I missing?

 

[anon(238680)]

You have to change the USB setting on the phone when you connect it to the PC from charging to mass storage.